相关题目
3-BAR VASIS, according to the installation position, is divided into three cross bars: （ ）.
Visual approach slope indicator system (VASIS), according to the installation position, is divided into （ ） ．
The normal higher and lower glide path angles for a 3-bar VASI are （ ） respectively.
Unless a higher angle is necessary for obstacle clearance, the normal glide path angle for a 2-bar VASI is （ ） ．
If the airplane is slightly above the glide slope of a runway with four-light PAPI, the pilot will see （ ） ．
If the airplane is slightly below the glide slope of a runway with four-light PAPI, the pilot will see （ ） ．
An on glide slope indication from a four-light PAPI is （ ） ．
An on glide slope indication from a tri-color VASI is （ ） light.
An above glide slope indication from a tri-color VASI is （ ） light.
A below glide slope indication from a tri-color VASI is （ ） light.
